Here we have a never installed, was still in a (now disintegrated) cardboard box from 1963 elongated toilet seat in Crane’s Sky-Blue color. The manufacturer was Olsonite, and the seat is made from some sort of composite material. Hinge centers are the normal 5 1/2″. As for condition, if you get the light just right, one can see faint lines from the cardboard on the lid. You have to try really hard to do this, but they are there. One only!